Intel Duo/Solo 945GM, 2804080 user manual Interrupt Request Lines IRQ, Function

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APPENDIX

B. Interrupt Request Lines (IRQ)

Peripheral devices use interrupt request lines to notify CPU for the service required. The following table shows the IRQ used by the devices on board.

Level

IRQ0

IRQ1

IRQ2

IRQ3

IRQ4

IRQ5

IRQ6

IRQ7

IRQ8

IRQ9

IRQ10

IRQ11

IRQ12

IRQ13

IRQ14

IRQ15

Function

System Timer Output

Keyboard

Interrupt Cascade

Serial Port #2

Serial Port #1

Reserved

Floppy Disk Controller

Parallel Port #1

Real Time Clock

Reserved

Reserved

Reserved

PS/2 Mouse

80287

Primary IDE

Secondary IDE

60	2804080 User’s Manual

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Contents USER’S Manual VersionAcknowledgments Table of Contents 2804080 Mini ITX Motherboard Introduction Product DescriptionChecklist Specifications LPC I/OBoard Dimensions Installations Installing the CPU Installing the Memory Installing and Removing Memory ModulesSetting the Jumpers Jumper Locations on JP5 LCD Panel Power Selection JP7 Clear Cmos SettingJP6 1394 Eprom Write Selection JP8 CompactFlash Slave/Master SelectionConnectors on Connector Locations on CN1 PS/2 Keyboard and PS/2 Mouse Connectors CN2, CN3 COM1 and VGA ConnectorFAN2 CPU Fan Power Connector IDE1 IDE Connector FDD1 Floppy Drive ConnectorJ1 IrDA Connector J14 ATX Power Supply ConnectorJ2 Digital I/O J3 System Function Connector Speaker Pins 1Reset Switch Pins 9 J6 USB5/6 Port Pin Header J8 Wake On LAN ConnectorJ7 COM2 Serial Port J11 LCD Backlight Connector J16 1394 Connector J17 Front Audio ConnectorJ20 Compact Flash Connector PCI1 PCI Slot supports 2 Master J18 PCI-Ex1 Slot J19 CD-In Pin HeaderCON1 Sdvo Port Connector Headers and Connectors on 2804080 Daughter Cards Signal Name Pin # TX0 TX0+RED ID391 ‒ J2 DVI Connector This page is intentionally left blank Bios Setup Bios Introduction Bios SetupPhoenix AwardBIOS Cmos Setup Utility Standard Cmos Setup DateIDE Channel Master/Slave TimeDrive a / Drive B Video Halt OnAdvanced Bios Features CPU FeatureHard Disk Boot Priority Virus WarningQuick Power On Self Test First/Second/Third Boot DeviceBoot Other Device Boot Up Floppy SeekTypematic Delay Msec Apic ModeSecurity Option MPS Version Control for OSAdvanced Chipset Features Dram RAS# to CAS# DelayDram Timing Selectable CAS Latency TimePrecharge Delay tRAS System Bios CacheableVideo Bios Cacheable On-Chip VGA SettingPanel Scaling Panel NumberOnboard PCI-E LAN LAN PXE Option ROMIntegrated Peripherals OnChip IDE DeviceIDE HDD Block Mode On-chip Primary PCI IDE EnabledOnChip Primary/Secondary PCI IDE IDE Primary/Secondary Master/Slave PIOOn-Chip Serial ATA Setting Power on FunctionKB Power on Password Hot Key Power onOnboard Serial Port Uart Mode SelectPwron After PWR-Fail Power Management Setup RUN Vgabios if S3 ResumePower Management Acpi FunctionSuspend Mode HDD Power DownPower On by Ring Video Off MethodResume by Alarm Reload Global Timer EventsPNP/PCI Configurations PC Health Status Auto Detect PCI Clk Frequency/Voltage ControlSpread Spectrum Modulated Load Fail-Safe Defaults Load Optimized DefaultsSet Supervisor Password Save & Exit SetupThis page is intentionally left blank Drivers Installation Intel Chipset Software Installation Utility Click IntelR Chipset Software Installation UtilityDrivers Installation VGA Drivers Installation Click IntelR I945GMChipset Family Graphics DriverImportant Note AC97 Codec Audio Driver Installation Click Realtek AC97 Codec Audio DriverLAN Drivers Installation Click Install Base Software to continueDriver Installation Appendix O Port Address MapInterrupt Request Lines IRQ FunctionWatchdog Timer Configuration Sample CodeSetW627EHFLD0x08 OutportbW627EHFINDEXPORT, W627EHFLOCK W627EHFINDEXPORT W627EHFBASE Global American Inc